Voltage distribution along a long ceramic insulator string in a high‐voltage tower window
ISSN: 0332-1649
Article publication date: 11 May 2010
Abstract
Purpose
The purpose of this paper is to introduce an efficient model for analysis of the voltage distribution along the long ceramic insulator strings in a high‐voltage tower window, especially when the structure and parameters of the ceramic insulator are unknown. The effect of the grading ring on the voltage distribution is also investigated.
Design/methodology/approach
A circuit model composed of capacitors is used to analyze the voltage distribution along the ceramic insulator strings in a transmission tower window. The capacitances of the disk insulators, line conductors, and tower are obtained by using the finite element method, charge simulation method, boundary element method, and measurement according to their characteristics.
Findings
The model is very efficient. The voltage distribution along insulator strings can be optimized by adjusting the parameters of the grading ring. The maximum amount of voltage applied to a single insulator disk can be reduced effectively by increasing either the diameter of the grading ring or the distance from the upper surface of the grading ring to the high‐voltage end of the insulator string.
Originality/value
The model is very efficient for analysis of the voltage distribution along the long ceramic insulator strings, especially when the structure and parameters of the ceramic insulator are unknown.
Keywords
Citation
Zhang, B., He, J., Zeng, R. and Liang, X. (2010), "Voltage distribution along a long ceramic insulator string in a high‐voltage tower window", COMPEL - The international journal for computation and mathematics in electrical and electronic engineering, Vol. 29 No. 3, pp. 811-823. https://doi.org/10.1108/03321641011028323
Publisher
:Emerald Group Publishing Limited
Copyright © 2010, Emerald Group Publishing Limited